Stone-cutting machine.



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PATENTED FEB. 26, 1907.

A. P. JONES. STONE CUTTING MAOHINE. APPLIOATION FILED MAR.11,' 1904.

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STONE CUTTING MACHINE. 'APPLIOATIOITFILED MAR.11, 1904.

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PATENTED FEB. 26,1907

A. F. JONES. STONE CUTTING MACHINE. APPLICATION IIL ED MAR.11, 1904.

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N0. s45,o95. PATENTED FBB.26,1907. A. F. JONES.

STONE CUTTING MACHINE.

APPLICATION FILED MAR. 11, 1904.

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- A. P; JONES.

STONE CUTTING MACHINE. APPLICATION FILED MAR. 11, 1904.

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STONE CUTTING MACHINE.

Specification of Letters Patent.

Patented Feb. 26, 1907.

Application filed March 11, 1904. Serial No. 197.655.

To all whom it may concern:

Be it known that I, ALBERT F. Jones, of Salem, county of Essex, State of Massachusetts, have invented an Improvement in Stone-Cutting Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawin s representing like parts.

This invention relates to stone-cutting machines, and many of the novel features of the invention are especially applicable to a stonecutting machine of the type comprising, essentially, a main frame movable on tracks and bearing tracks for the tool-carriage, which are disposed at right angles to the tracks on which it moves; and the invention has for its object to provide means for moving the tool-carriage on the tracks on the main frame, capable of operation in any position of the main frame on its tracks; also, more specifically speaking, to provide a power-driven shaft on the main frame, which is adapted to operate means for moving the tool-carriage on the tracks on said main frame, and means for transmitting power to said power-driven shaft in any position of the main frame on its tracks; also, to so construct and arrange the means employed for moving the tool-carriage as to operate to move the same at different speeds; also, to provide means for moving the main frame on the tracks provided for it, capable of operation in any position thereof, and, more specifically speaking, to provide a power-driven shaft on the main frame, which is adapted to operate means for moving said main frame on the tracks provided for it, and means for transmitting power to said power-driven shaft in any position of the main frame; also, to so construct and arrange the means employed for moving the main frame along on its tracks as to operate to move it at different speeds; also, to provide a power-driven endless belt which is adapted to serve as the means for ransmitting power to the powerdriven shaft on the main frame; also, to provide a stone-cutting machine of the type specified with a turret borne by the tool-carriage, which is adapted to turn on a vertical axis, a tool-holder carried by said turret, which is adjustable on. a horizontal axis, a tool held by said tool-holder, and means for operating said tool; also, to provide improved means for vertically adjusting the turret to different elevations.

Figure 1 shows in front elevation a stonecutting machine embodying this invention. Fig. 2 is a plan view of the machine shown in Fig. 1. lug. 3 is an end view of the machine shown in Fig. 1. Fig. 4 is a sectional detail of a portion of the machine shown in Fig. 3, taken on the dotted line t l, particularlyto show the shifting devices, the variablespeed gears and shafts supporting them being omitted. Fig. 5 is an enlarged detail showing in front elevation the turret-support and the steam connections to the tool. Fig. 6 is a longtudinal vertical section of a specially formed T-coupling which is employed in the steam connections. Fig. 7 is a vertical section of the fittings by which the flexible steam-pipes are rotatably connected to the non-rotatable steam-pipes. Figs. 8 and 9 are enlarged sectional details or the means for vertically adjusting the turret-support. Fig. 10 is a detail showing in diagram the driving mechanism for the main frame and toolcarriage and Fig. 11 is a vertical section of the turret, its support, the tool-holder borne by the turret, the tool, and means for operating the tool.

a rep esents the tool-holder adapted to support the tool; I), the frame bearing the tool-holder having trunnions 5 whereby .it is adapted to be ad usted on a horizontal axis; (Z a toothed sector secured to the frame I), and d a worm engaging said sector for moving the frame I) on its horizontal axis. 0 is the turret which supports said frame I), and which consists of a ring adapted to be adjusted on a vertical axis, and a ring which supports said turret. As a means for operating the tool the steam-cylinder g, containing a piston is employed, which latter is connected with the tool, and i represents the valve-box containing a valve by which the admission of steam and the exhaust is controlled; This form of turret and tool-holder is shown only for the purpose of illustrating my invention it being understood that a turret and also a tool-holder of any other form may be employed in lieu thereof.

l'he ring f, wnich supports the turret c, is attached by belts or otherwise to the lower ends of a pair of vertically-adjustable side pieces 0, mounted to slide up and down on upright posts 0 wiich are secured to the oppcsite sides of a tool-carriage. The upright posts 0 0 have on their adiacent or inner faces a pair of parallel vertical ribs 0 and also a horizontal connecting-rib 0 The side pieces are each formed with a pair of outside ribs or flanges which engage the outer or remote sides of the vertical-ribs on the posts 0, and they are each provided with a block 0 fitted to slide between the vertical ribs 0 The blocks 0 are rigidly secured by bolts or otherwise, to the side pieces 0. or they may be formed integral with said side pieces.

A vertical screw 0 is provided for each side piece 0 for adjusting it to different elevations,

and said screw passes through a threaded holein the block 0 and has upon its lower end a plate 0, which rests upon a set of balls 0 which are supported upon the horizontal rib 0 The screw 0 is free to turn with the plate 0 resting on the balls, and as it is turned the block 0 will be moved up or down, according to the direction the screw is turned, and the side piece 0, to which said block is attached or of which it may form a part, will be correspondingly raised or lowered. 4

The two side pieces 0 0 will be raised and lowered simultaneously to thereby raise and lower the turret and hold it at different elevations. To accomplish this result, each screw 0 has secured to its upper end a sprocket-wheel 0 and around said sprocketwheels a sprocket-chain 0 passes, which also passes around a sprocket-wheel 0*, secured to the upper end of a rod 0 disposed vertically in suitable bearings on the tool-carriage, and said rod 0 has secured to its lower end a hand-wheel 0, which is within easy reach of the operator. By turning said hand-wheel the sprocket-chain will be moved and the two screws 0 will be simultaneously turned in the same direction to thereby simultaneously move the side pieces 0, which support the turret. The posts 0, which serve as guides for the turret-support, are rigidly secured to the tool-carriage. The tool-carriage is movable on tracks supported upon or by a main frame beneath which the stone is held, and said tool-carriage moves in a direction to carry the tool across the stone, and said main frame is likewise mounted on tracks and is movable in a direction at right angles to the movement of the tool-carriage to thereby move thetocl-carriage along for the next cut.

The tool-carriage which is herein shown (see Fig. 1) for the purpose of illustrating one embodiment of my invention is composed of four upright corner-posts p, end bars p, of which there may be any suitable number, and side bars 29 of which there may be any suitable number, and wheels 29 which are mounted on stub-axles supported by said tool-carriage. One or more sprocket-chains p are employed, two being herein shown, the opposite ends of which are connected to the opposite ends of the toolcarriage, (see Fig. 2,) and said chains pass around sprocketwheels g0, idly mounted on shaft p at one end of the main frame, and aroimd sprocket- Figs. 1 and 3,) which passes around a sprocket- I wheel 19 secured to one of the shafts p of a set of variable-speedgears, of which the shaft 19 is the driving-shaft. The shaft p has secured to it a bevel friction-gear p, which is located between and adapted to be moved into engagement with either the bevel frictiongear p or 19 both of which are secured to a shaft 10, to which the driving-pulley t is secured. The shaft 3), bearing the gear 79 is pivoted at one end at p andis supported near its opposite end in a bearing at the lower end of an arm 19, which is pivoted at p ,so that said shaft may be swung on its pivot by a suitable shifting device adapted to be operated from different parts of the machine and the gear p borne by it moved into engagement with either gears p or p and when in engagement with one of said gears the toolcarriage will be moved in one direction and when in engagement with the other gear the tool-carriage will be moved in the opposite direction. The shaft p is the main powerdriven shaft. As a shifting device for the bevel-gear p a bar 29 passes freely through a hole formed in the lower end of the swinging shaft-supporting arm 29 and has secured to it at points remote from and at opposite sides of the arm two collars p and spiral springs encircle the bar between the arm and said collars, thereby yieldingly connecting the bar with the arm. The bar 19 is loosely connected to the end of a short arm 19 which is secured to an upright shaft 19 and to said shaft a crescentshaped plate is secured, either end of which is adapted to be engaged by an arm 19, secured to an upright shaft 19, to which is secured a handlever 19 As the hand-lever p is moved in one or the other direction the shaft 19 will be correspondingly turned and one or the other end of the plate will be engaged and the shaft p turned slightly on its axis and the bar p moved longitudinally to thereby swing the arm p and move the shaft p on its pivot. In order to thus partially rotate or turn the shaft 29 from different parts of the machine, the same as it is turned by the hand lever, an arm 90 is secured to said shaft, the extremity of which is connected to a cord p, which passes around several pulleys 10 located at different parts of the machine-frame and so disposed that an endless cord is provided, and the operator by grasping and pulling upon the cord at any part of its length may thus operate the shifting device and move the bevel-gear, and therefore cause the tool-carriage to be moved in either direction.

lb representsa flexiblepipe for conducting live steamv t0 the valve-box t, and g represents a flexible pipe leading from the cylinder 9 for the exhaust-steam. The flexible pipe h is attached to one end of a non-flexible pipe h and the opposite end of said pipe'h has a'nut h secured upon it which is'screwed into the lower end of a union h, and the upper end of said union is internally threaded to receive a stuffing-box h, and a pipe it passes down through said stuffing-box and union, which has a flange at its lower end which abuts against the nut h. The outer end of the pipe h is supported by a stand.- ard 72, projecting upward from the turret. The flexible pipe g is attached to a nipple g projecting, from a flanged fitting g, the flange of which overlies a flange formed at the lower end of a tubular support 5/ formed on an arm g, which is attached to the toolcarriage. The tubular support g and the pipe 7& passing through it are movable with the tool-carriage and non-rotatable, and the fitting g, Stllffll'lQrbOX 7N, and union h are free to revolve, so that as the turret bearing the steam-cylinder and valve-box is revolved the live and exhaust steam connections will be revolved with it.

A pipe g is connected at one end to the upper end of the tubular support 9 and the pipe 71 extends through said pipe 9 and at the opposite end the pipe h is connected by a short pipe h with a nipple 7W on a speciallyformed T -coupling, (see Fig. 6,) and the end of the pipe is closed and is connected by a short pipe 9 with a nipple g on said T- coupling. The T-coupling has two separate passages through it, one of which communi cates with a pipe 7t and the other with a pipe 9", and said pipes 72, and g are secured to said coupling, and said pipes extend down a short distance and theirlower ends are connected to another T-coupling (1, which is constructed substantially the same as the aforesaid Tcoupling, having two separate passages through it, and two pipes 9 7t extend from said Tcoupling q to a similarly-formed T-coupling q, havingtwo separate passages through it, and two pipes g h extend from said T-coupling q to a like-formed T-coupling (1 havingtwo separate passages through it, and two pipes 9 7t extend from said T-coupling to asimilarly-formed T-coupling (1 having two separate passages through it, and two pipes 9 h extend from said T- coupling q to a similarlyformed T-coupling having two separate passages through it. The T-couplings q and (f and the pipes conneoting them are stationarily supported on the main frame, and the T-coupling is stationarily supported independent of the main frame, and as the main frame moves along on the tracks the pipes connecting the T-coup ling g with the T-coupling will be moved like unto a toggle-lever. The T-couplingg being stationarily supported on the main frame and being connected by pipes with a T-coupling on the tool-carriage, said tool-carriage may be moved along on the tracks rovided for it in opposite directions. The exible pi es g 7t provide for varying the elevation. of the turret-support and for oscillating the tool-holder on its horizontal axis. Other means for operating the tool may be employed in lieu of the means herein shown.

The main frame of the machine, which supports the tracks on which the toolcarriage travels, consists, essentially, of a horizontal portion A of any suitable construction, sup ported at each end by two upright columns B, likewise of any suitable construction. At the lower end. of each column B a roller 8 is ournaled, which is grooved or otherwise formed, adapting it to run on a track 5, and a pair of tracks 8 are provided, which are arranged at right angles to the tracks which are supported upon the main frame and on which the tool-carriage travels.

To one of the roller-axles, at each end of the machine, a sprocket-wheel s is secured, and sprocket-chains 8 pass around said sprocket-wheels, which pass around sprocketwheels 8, secured to a horizontal shaft 8 having its bearings on the main frame. At one end of the shaft 8 a wormwheel s is secured, which is engaged by a worm 8 secured to one of the shafts s of a set of variable speed gearing, another shaft 8 of which bears a bevel friction-gear 8 which is adapted to engage either bevel friction-gear p or 19 A shifting device is connected with the shaft 8 which is constructed substantially the same as the shifting device which is connected with the shaft 1), and consists of a bar 8 having two collars s thereon, which pass freely through a hole in the lower end of a swinging arms, which serves as an end bearing for the shaft 8 The bar 8 is connected to a short arm 8 secured to an upright shaft 3 and to said shaft 8 a pair of curved arms 8 are secured, adapted to be engaged by a short arm 8 secured to an upright shaft 8 which has secured to it the op crating-lever s adapted to be engaged by the operator, and also has secured to it an arm 8 which is connected to a cord 8 which passes around a set of pulleys 19 said pulleys each being provided with two peripheral grooves. The operator may by grasping and pullin upon the cord 3 move the bevel friction-gear 3 into engagement with either bevel friction-gear p or 2). Other forms of main frame may be employed in lieu of the form herein shown and. also other means for moving it along on the tracks.

As a means cf driving the main shaft 1), which is herein referred to as the powerdriven shaft, T emplcy a pcwer-driven endless belt, as by such means the power may be transmitted to the shaft in any position of the main frame. A pulley t, having two pet ripheral grooves, is secured to said shaft 1), and at opposite sides of said pulley two idle pulleys t t are journaled to the main frame, also having two peripheral grooves, and stationarily supported in suitable hangers above the machine and independent of itas, for instance, on the ceiling of the roomare pulleys t t i (see Fig. 10,) the pulleys t t having two peripheral grooves and the pulley t having one peripheral groove, and a take-up pulley t is also provided. Either the pulleys t or i may be employed as a power-driven pulley. The power-driven endless belt t passes around the several pulleys as follows: t t t t t t t t t t t t t. The endless belt t is driven by the driving-pulley t or t The take-up pulley t over which the endless belt passes, may be of any suitable constructionas, for instance, it may be j ournaled to a block 25 which is mounted on and adapted to slide on a bar t, and a weight i may be connected to said block t by a cord t to hold it with the endless belt taut.

The stone to be cut is represented in Fig. 1 beneath the cutting-tool and will be supported by any suitable means so far as my present invention is concerned.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, a power-driven shaft supported on the main frame and means operated by it for moving the tool carriage in opposite directions and means for transmitting power to saidpowerdriven shaft, substantially as described.

2. In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable, on the tracks on said main frame, a power-driven shaft supported on the main frame bearing a belt-pulley, means operated by said shaft for moving the tool-carriage in I opposite directions, an endless belt passing over said belt-pulley and a power-driven bel pulley supported adjacent the main frame over which the said belt also passes, substan tially as described.

3. In a stone cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, a power-driven shaft supported on the main frame and means operated by it for moving the tool-carriage in opposite directions and a power-driven endless belt for transmitting power to said power-driven shaft, substan tially as described.

4f In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, a power-driven shaft supported on the main frame and means operated by it for moving the tool-carriage in opposite directions and at variable speeds, and means for transmitting power to said power-driven shaft, substantially as described.

5. In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, a chain connected at its opposite ends to the opposite ends of said tool-carriage, a shaft at each end of the main frame bearing sprocket-wheels over which said chain passes, a power-driven shaft supported by said main frame, means for connecting it with one of said sprocket-wheel shafts and means for transmitting power to the said powerdriven shaft, substantially as described.

6. In a stone-cutting machine, a main frame movable on tracks and beating a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, a

chain connected at its opposite ends to the opposite ends of said tool-carriage, a shaft at each end of the main frame bearing sprocketwheels over which said chain passes, a powerdriven shaft supported by said main frame, means for connecting it with one of said sprocket-wheel shafts and a power-driven endless belt for transmitting power to said power driven shaft, substantially as described.

7. In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which. it moves, a tool-carriage movable on the tracks on said main frame, a chain connected at its opposite ends to the opposite ends of said tool-carriage, a shaft at each end of the main frame beating sprocketwheels over which said chain passes, a powerdriven shaft supported by said main frame bearing a belt-pulley, means for connecting said shaft with one of the sprocket-wheel shafts, an endless belt passing over said beltpulley and a driving-pulley supported adj acent the main frame over which said belt also passes, substantially as described.

8. In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, a chain connected at its opposite ends to the opposite ends of said tool-carriage, a shaft at each end of the main frame bearing sprocketwheels over which said chain passes, a

power-driven shaft supported by said main l frame, variablaspeed gearing operated by it, means for connecting said variable-s 'z eed gearing with one of said sprocket-wheel shafts, and means for transmitting power to said power-driven shaft, substantially as de scribed.

9. In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it in ves, a tool-carriage movable on the tracks on said main frame, a powerdriven shaft supported on the main frame, means operated by it for moving the main frame in opposite directions, and means for transmitting power to said power-driven shaft in any position of said mainframe, substantially as desci ibed.

10. In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the racks on said main frame, a power-driven shaft supported on the main frame, means operated by it for moving the main frame in opposite directions and at variable speeds, substantially as described.

11. In a stone-cutting machine, a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, a power-driven shaft supported on the main frame, means operated by it for moving the tool-carriage in opposite directions, means also operated by it for moving the main frame in opposite directions, and means for transmitting power to said powerdriven shaft, substantially as described.

12. In a stone-cutting machine a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, power-driven shaft supported on the main frame, means operated by it for moving the tool-carriage in opposite directions, means also operated by it for moving the main frame in opposite directions, and a powerdriven endless belt for transmitting the power to said power-driven shaft, substantially as described.

13. In a stone-cutting machine, a main frame movable on tracks, and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, chains connected to the opposite ends of said tool-carriage, shafts bearing sprocket-wheels over which said chains pass, a shaft bearing a driven gear, variable-speed gearing between said shaft and one of the shafts bearing the sprocket-wheels, and means for revolving sa d driven gear in opposite directions, substantially as described.

14. In a stone-cutting machine, a main frame movable on tracks, and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, chains connected to the opposite ends of said tool-carriage, shafts bearing sprocket-wheels over which said chains pass, a shaft bearinga driven gear, and gearing connecting said shaft with one of the shafts bearing the sprocket-wheels, a driving-shaft bearing two driving-gears and a shifting device for moving said driven gear into engagement with either one of said driving-gears, substantially as described.

15. In a stone-cutting machine, a main frame movable on tracks, and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, chains connected to the opposite ends of said tool-carriage, shafts bearing sprocket-wheels over which said chains pass, a shaft bearing a driven gear, gearing connecting said shaft with one of the shaftsbearing the sprocketwheels, a driving-shaft bearing two drivinggears, a shifting device for moving said driven gear into engagement with either one of said driving-gears, a cord connected with the operating-lever of said shifting device and supports therefor mounted on the main frame, substantially as described.

16. In a stone-cutting machine, the combination of a main frame provided with rollersupports, tracks on which it moves, actuating mechanism for rotating said rollers in opposite directions, a shifting device for said actuating mechanism, means for operating said shifting device, a tool-carriage borne by said main frame, movable on tracks thereon at right angles to the movement of said main frame, means for moving said tool-carriage, a tool borne by said carriage, and means for operating it, substantially as described.

17. In a stone-cutting machine, the combination of a main frame provided with rollersupports, tracks on which it moves, sprocketwheels secured to the rolleraxles at one side of the frame, a horizontal shaft bearing sprocket-wheels, chains connecting the sprocket-wheels of said shaft with the sprocket-wheels on the axles, mechanism for driving said horizontal shaft in opposite directions, a tool-carriage borne by said main frame, movable on tracks thereon at right angles to the movement of said main frame,

means for moving said toolcarriage, a tool borne by said tool-carriage, and means for operating it, substantially as described.

18. In a stone-cutting machine, a main frame having roller-supports, means for positively driving the roller-supports at one side of the frame, a tool-carriage movable on tracks on said main frame, means for moving it, a main driving-shaft having a belt-pulley thereon, an endless belt passing around said i pulley, and pulleys supported independent of the main frame over which said belt also passes, substantially as described.

19. In a stone-cutting machine, the combination of a main frame having roller-supports, means for positively driving the rollersupports at one side of the frame, a main driving-shaft for said means borne by said frame, a belt-pulley thereon, stationarilysupported belt-pulleys independent of the frame, an endless belt passing around said pulleys, a tool-carriage mounted on said main frame, a tool borne by it, and means for operating said tool, substantially as described.

20. In a stone-cutting machine, the combination of a main frame movable on tracks, a tool-carriage mounted on tracks on said main frame, and movable at right angles thereto, means for moving said tool-carriage, a driving-shaft borne by the main frame for operating said means, a belt-pulley thereon, a set of stationarily-supported pulleys independent of the frame, and an endless belt which passes around all of said pulleys, substantially as described.

2L In a stone-cutting machine, the combination of a main frame having roller-supports, means for positively driving the rollersupports at one side of said frame in opposite directions, a shifting device for said means, a tool-carriage movable on tracks on said main frame, means for moving it in opposite directions, a shifting device for said means, a driving-shaft on the main frame having a belt-pulley thereon, stationarily-supported belt-pulleys independent of the main frame, and an endless belt passing around all of said pulleys, substantially as described.

22. In a stone-cutting machine, the combination of a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, a turret borne by said carriage adapted to turn on a vertical axis, a toolholder carried by said turret, adjustable on a horizontal axis, a tool held by said toolholder, and means for operating said tool, substantially as described.

23. In a stone-cutting machine, the combination of a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, means for moving it back and forth at different speeds, a tool-carriage movable on the tracks on saidmain frame, a turret borne by said carriage adapted to turn on a vertical axis, a tool-holder carried by said turret, adjustable on a horizontal axis, a tool held by said tool-holder, and means for operating said tool, substantially as described.

24. In a stone-cutting machine, the combination of a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a tool-carriage movable on the tracks on said main frame, means for moving it back and forth at diiferent speeds, a turret borne by 1 said carriage adapted to turn on a vertical axis, a too1-nolder carried by said turret, adjustable on a horizontal axis, a tool held by said tool-holder, and means for operating said tool, substantially as described.

25. In a stone-cutting machine, the combination of a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a power-driven shaft supported by said movable main frame, means operated by it for moving said main frame in opposite directions, and means for transmitting power to said power-driven shaft, a tool-carriage movable on the tracks on said main frame, a turret borne by said carriage adapted to turn on a vertical axis, a tool-holder carried by said turret adjustable on a horizontal axis, a tool held by said tool-holder, and means for operating said tool, substantially as described.

26. In stone-cutting machine, the combination of a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a toolcarriage movable on the tracks on said main frame, a power-driven shaft supported by said movable main frame, means operated by it for moving said tool-carri age in opposite directions, means for transmitting power to said power-driven shaft, a turret borne by said carriage adapted to turn on a vertical axis, a tool-holder carried by said turret adjustable on a horizontal axis, a tool held by said tool-holder and means for operating said tool, substantially as described.

27.- In a stone-cutting machine, the combination of a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a power-driven shaft, and means operated by it for moving said main frame in opposite directions at different speeds, means for transmitting power to said shaft, a tool-carriage movable on the tracks on said main frame, a turret borne by said carriage adapted to turn on a vertical axis, a tool-holder carried by said turret adjustable on a horizontal axis, a tool held by said tool-holder and means for operating said tool, substantially as described.

28. In a stone-cutting machine, the com bination of a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a toolcarriage movable on the tracks on said main frame, a powerdriven shaft and means operated by it for moving said tool-carriage in opposite directions at different speeds, means for transmitting power to said shaft, a turret borne by said carriage adapted to turn on a vertical axis, a tool-holder carried by said turret adjustable on a horizontal axis, a tool held by said tool-holder and means for operating said tool, substantially as described.

29. In a stone-cutting machine, the combination of a main frame movable on tracks and bearing a pair of tracks disposed at right angles to the tracks on which it moves, a toolcarriage movable on the tracks on said main frame, a turret borne by said carriage adapted to turn on a vertical axis, a tool-holder carried by said turret adjustable on a horizontal axis, a tool held by said tool-holder, means for operating said tool and means for adjusting said turret to different elevations, substantially as described.

30. In a stone-cutting machine, a turret bearing a tool-holder movable on a vertical axis, a ring supporting said turret, verticallyadjustable side pieces to which said ring is attached, upright supports for said side pieces, and means for vertically adjusting said side pieces and "for holding them at different elevations, substantially as described.

31. In a stone-cutting machine, a turret bearing a tool-holder movable on a vertical axis, a ring supporting said turret, verticallyadjustable side pieces to which said ring is attached, upright supports for said side pieces, vertical screws engaging said side pieces, and means for simultaneously turning said screws, substantially as described.

32. I11 a stone-cutting machine, a turret bearing a tool-holder movable on a vertical axis, a ring supporting said turret, verticallyadjustable side pieces to which said ring is attached, upright posts having vertical ribs which guide said side pieces, vertical screws engaging said side pieces and means for simultaneously turning said screws, substantially as described.

33. In a stone-cutting machine, a turret bearing a tool-holder, movable on a vertical axis, a ring supporting said turret, verticallyadjustable side pieces to which said ring is attached, upright supports for said side pieces, vertical screws engaging said side pieces, sprocket-wheels secured to said screws, a rod having a sprocket-wheel secured to it, means for turning said rod and a sprocket-chain passing around the sprocketwheels on said screws and rod, substantially as described.

34. In a stone-cutting machine, the combination of a turret bearing said tool-holder movable on a vertical axis, a ring supporting said turret, vertically-adjustable side pieces to which said ring is attached, upright supports for said side pieces, vertical screws engaging said side pieces having plates at their lower ends, balls on which said plates rest, and means for turning said screws, substantially as described.

In testimony whereof I have signed my name to tins specification in the presence of two subscribing witnesses.

ALBERT F. JONES.

Witnesses:

B. J. N oYEs, H. B. DAVIS. 

